air leakage


Also found in: Acronyms.

air leakage

[′er ‚lēk·əj]
(mechanical engineering)
In ductwork, air which escapes from a joint, coupling, and such.
The undesired leakage or uncontrolled passage of air from a ventilation system.

air leakage

1. The volume of air which flows through a closed window or door in a given length of time as a result of the difference in air pressure on its opposite faces.
2. In ductwork, air which escapes from a joint, coupling, etc.
3. The undesired leakage or uncontrolled passage of air from a ventilation system.
4. The flow of uncontrolled air through cracks or openings in an enclosure within a building (such as a HVAC plenum) or through the surfaces which enclose the building.
References in periodicals archive ?
ASTM E779 was originally developed to provide accurate, repeatable air leakage test results in single-family homes.
Analyzing a database of residential air leakage in the United States.
Manufacturers can develop better installation kits for window ACs, and ensure that foam in through-the-wall air conditioners can withstand repeated removal and reinstallation; Federal regulations for AC units can add standards for air leakage.
In each subfigure, results are presented for each city, with air leakage (NL) values ranging from 0.
The homes reduce warm air leakage by being almost completely airtight, reducing condensation and draughts.
He said he will have the company announce, possibly in early November, results of a probe into fresh allegations that it tampered with data on air leakage prevention-efficacy of a container surrounding the No.
They also administer a blower door test to measure air leakage, which makes cooling and heating a house expensive.
The codes include energy conservation provisions for residential and commercial buildings, and building envelope requirements for thermal performance and air leakage.
It has also adopted and modified a manual developed in Canada and conducts workshops on heat transfers, the movement of water vapor and how it relates to dew point, the placement of vapor and weather barriers and control of air leakage.
Old windows with mediocre insulating value or air leakage around warped, deteriorated, or damaged frames can as much as double heating and cooling costs.
He or she will evaluate the insulation, look for air leakage and excessive condensation, and recommend additional insulation or other ways to lower energy costs.